Rock or like drill.



'PATENTED JAN. 3, 1905.

W. WILSON.

ROCK 0R LIKE DRILL. APPLICATION PILVED MAY 25. 1903.

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PATENTED JAN. 3, 1905.

W. WILSON. ROCK OR LIKE DRILL. APPLICATION FILED MAY 25. 1903.

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. IINTTED STATES Patented January 3, 1905.

PATENT OFFICE.

WILLIAM WILSON, OF CLEATOR MOOR,- ENGLAND.

ROCK OR LIKE DRILL.

SPECIFICATION forming part of Letters Patent No. 779,017, dated January 3, 1905.

Application filedMay 25,1903. Serial No. 158,722.

To ctZZ whom it may concern:

Be it known that I, WILLIAM WILSON, agent for explosives, a subject of the King of Great Britain, residing at 57 Ennerdale road, Cleator Moor, in the county of Cumberland, England, have invented certain new and useful Improvements in or Connected with Rock or Like Drills, of which the following is a specification, reference being had to the drawings hereunto annexed and to the letters marked thereon-that is to say:

The invention relates to improvements in or connected with rock or like drills, and more particularly those of the plunger type.

In the working of rock or like drills a considerable amount of dust is created, which besides being troublesome to the operator and dangerous to health has a tendency to choke the drill, and in order to lay and remove this dust it is sometimes the practice to throw a stream of water upon the work from a hose or otherwise by hand; but this involves considerable trouble and expense and is inefficient and often impossible.

Now the object of the present invention is to accomplish the laying and removing of the dust by the aid of the drill itself, so that no extra work is thrown upon the man tending the drill.

In the accompanying drawings, Figure l is a longitudinal section of a plunger-drill of the well-known Ingersoll type having applied thereto the present invention. Fig. 2 is a detail view of part of Fig. 1, illustrating more particularly the rifled bar and water-tube. Fig. 3 is a similar View to Fig.1, illustrating a slight modification; and Fig. 4 is a detail view of part of Fig. 3.

In the several figures like parts are indicated by similar letters of reference, and Figs. 2 and 4 are drawn to an increased scale with respect to the other figures of the drawings.

Referring to Figs. 1 and 2, (0 represents the body or cylinder of the drill. brepresents the piston and piston-rod. 0 represents the chuck which is fixed with the piston-rod. d represents the drill which is fixed with the chuck. 6 represents the rifled bar. 0' represents the ratchet-wheel fixed therewith. f

represents the back head, and 9 represents the cushioning-springs.

According to the present invention the piston and piston-rod b are formed with an axial hole or way 7) therethrough. The chuck 0 is formed with a corresponding hole 0, and the drill or bit (Z is formed with a corresponding hole d, extending right through the same.

The rifled bar a is formed with a corresponding axial way 0 therethrough and through the ratchet-wheel part a thereof, while the back head f andcushioning-springs g are formed with perforations f g to correspond.

Passing through the perforations g and f of the cushioning-springs and back head is a water-tube it, which is threaded at it and screws into a corresponding screw thread in the perforation f" of the back head f in order to fix the same therewith and prevent it turning with the rifled bar 0, and this tube A extends loosely through the bore 0 of the rifled bar (1 and is fitted into the bore 6 of the piston-rod b and is made water and air tight therewith by means of suitable packing 7L and a gland if.

The water-tube h beyond the cushioningsprings g is connected by an elbow 2" with a regulating-cock i, which is by a flexible pipe i connected with any suitable supply of water under pressure, and the operator may thus cause a sufficient stream of water to pass through the pipe 71. and through the pistonrod L, chuck c, and drill or bit (Z, and to issue from the latter onto the work, so as to effectually lay or prevent the formation of dust arising from the action of the drill cl and at the same time clean out the hole made by the drill.

In order to obtain the necessary supply of water, the water-pipe i is preferably connected with the lower part of a portable tank or reservoir 1', the upper part of which is by a pipe 3" connected with a branch In from the usual pipe in, supplying air, steam, or other motive fluid to the cylinder of the drill d, and said branch 7/ is fitted with a regulatingcock 76 by which means part of the motive fluid employed to work the drill will be conveyed into the top of the tank or reservoir 1', thereby creating a pressure within the same which may be regulated by the cock is and forcing a stream of water into and through the water-tube it and out at the drill or bit d.

The tank or reservoir 1' is fitted with an easily-removable air-tight door for filling purposes, and it might be fitted with a safetyvalve, if required.

When a solid or irnperforate drill or bit is used and the water-supply thereto is not required, the motive fluid to the tank or reservoir 7' may be cut off by means of the regulating-cock and the water-supply to the pipe 172, and drill cZ may be interrupted by the regulating-cock 2'.

For the purpose of laying the dust and eliminating foul gases after blasting operations a rose or spreader, such as Z, may be employed independently of the drill, and this is accomplished by coupling said spreader by means of a flexible pipe Z and union Z with the flexible pipe W, as shown by the dotted lines in Fig. 1.

In the example given at Figs. 3 and 4 is shown a modified method of passing the water through the rifled bar a and which may be adopted in cases where the diameter of said bar is too small to admit of the water-tube it passing completely therethrough. For this purpose the water-tube It is divided into two parts, and one part if is screwed into one end of the rifled bar a and turns therewith, a tight joint being made by the packing 7L and gland it while the other part h is screwed into the other end 6 thereof and passes loosely through the back head f and cushioning-springs g and is connected with the regulating-cock 71 by means of a swivel consisting of a plug 7L fixed with the pipe 72 and working in a barrel or casing 71 connected with the regulating-cock d; the plug it being axially bored and formed with suitable ways [L6, placing it in constant communication with the cock c'. In other respects this device is assumed to be identical with that hereinbefore described and shown with respect to Figs. 1 and 2.

It will be understood that by slightly modifying the parts the invention may be adapted to other classes of plunger-drills than that hereinbefore shown and described.

By the means hereinbefore described a drilling-machine may at comparatively small expense be caused to supply a constant stream of water under pressure to the point of the drill or bit, thereby laying the dust and clearing the hole, while by the use of the spraying apparatus, which can be easily and quickly brought into use, the dust caused by blasting operations may be laid and the accompanying gases destroyed.

Having now particularly described and ascertained the nature of the said invention and in what manner the same is to be performed, I declare that what I claim is 1. In a rock-drill the combination of a cylinder having an axial way through the back thereof a hollow piston working within the cylinder, a hollow rifle-bar working within the hollow of the piston and formed of shorter length than said hollow, a hollow piston-rod fixed with the piston, a hollow chuck removably fixed with the piston-rod and adapted to receive a hollow bit, a pipe connected with a. water-supply exterior-1y of the cylinder and passing through and fixed with the cylinder end and loosely passing through the bore of the rifle-bar and entering the bore of the piston-rod and a stufling-box beyond the end of the rifle-bar within the hollow of the piston for forming a fluid-tight joint between the pipe and the piston and piston-rod substantially as herein shown and described and for the purpose stated.

2. In a rock-drill the combination of a cylinder having an axial way through the back thereof a hollow piston working within the cylinder, a hollow rifle-bar working within the hollow of the piston and formed of shorter length than said hollow, a hollow piston-rod fixed with the piston, a hollow chuck removably fixed with the piston-rod and adapted to receive a hollow bit, a pipe extending from the rifle-bar into the piston-rod and a stulfingbox arranged between the end of the rifle-bar and the end of the hollow of the piston and around the pipe for making a fluid-tight joint between the pipe and the piston substantially as herein shown and described and for the purpose stated.

' WILLIAM WILSON Witnesses:

J OI-lN PARKER, THOMAS VODDEN. 

